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pa.md (prefetch, [...]): Only allow short displacements with the spatial-locality cache-control completer.

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* pa.md (prefetch, prefetch_32, prefetch_64): Only allow short
	displacements with the spatial-locality cache-control completer.

From-SVN: r84125
This commit is contained in:
John David Anglin 2004-07-05 17:49:20 +00:00 • committed by John David Anglin
parent bd4e926677
commit 5dbf8812f1
2 changed files with 37 additions and 6 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-07-05 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
* pa.md (prefetch, prefetch_32, prefetch_64): Only allow short
displacements with the spatial-locality cache-control completer.
2004-07-05 Zack Weinberg <zack@codesourcery.com>
* langhooks.c: Don't include gt-langhooks.h.

38
gcc/config/pa/pa.md
View file

@ -9359,6 +9359,12 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
(match_operand 2 "const_int_operand" "")]
"TARGET_PA_20"
{
/* The PA 2.0 prefetch instructions only support short displacements
when a cache control completer needs to be supplied. Thus, we
can't use LO_SUM DLT addresses with the spatial locality completer. */
if (operands[2] == const0_rtx && IS_LO_SUM_DLT_ADDR_P (operands[0]))
FAIL;
/* We change operand0 to a MEM as we don't have the infrastructure to
output all the supported address modes for ldw/ldd but we do have
it for MEMs. */
@ -9385,7 +9391,14 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
[(prefetch (match_operand:DI 0 "prefetch_operand" "A,RQ")
(match_operand:DI 1 "const_int_operand" "n,n")
(match_operand:DI 2 "const_int_operand" "n,n"))]
"TARGET_64BIT"
"TARGET_64BIT
&& (operands[2] != const0_rtx
|| REG_P (XEXP (operands[0], 0))
|| IS_INDEX_ADDR_P (XEXP (operands[0], 0))
|| (GET_CODE (XEXP (operands[0], 0)) == PLUS
&& REG_P (XEXP (XEXP (operands[0], 0), 0))
&& GET_CODE (XEXP (XEXP (operands[0], 0), 1)) == CONST_INT
&& VAL_5_BITS_P (XEXP (XEXP (operands[0], 0), 1))))"
{
/* The SL completor indicates good spatial locality but poor temporal
locality. The ldw instruction with a target of general register 0
@ -9394,11 +9407,11 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
static const char * const instr[2][2][2] = {
{
{
"ldw,sl RT'%A0,%%r0",
"",
"ldw RT'%A0,%%r0",
},
{
"ldd,sl RT'%A0,%%r0",
"",
"ldd RT'%A0,%%r0",
},
},
@ -9421,6 +9434,9 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
|| (locality < 0 || locality > 3))
abort ();
if (which_alternative == 0 && locality == 0)
abort ();
return instr [which_alternative][read_or_write][locality == 0 ? 0 : 1];
}
[(set_attr "type" "load")
@ -9430,7 +9446,14 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
[(prefetch (match_operand:SI 0 "prefetch_operand" "A,RQ")
(match_operand:SI 1 "const_int_operand" "n,n")
(match_operand:SI 2 "const_int_operand" "n,n"))]
"TARGET_PA_20"
"TARGET_PA_20
&& (operands[2] != const0_rtx
|| REG_P (XEXP (operands[0], 0))
|| IS_INDEX_ADDR_P (XEXP (operands[0], 0))
|| (GET_CODE (XEXP (operands[0], 0)) == PLUS
&& REG_P (XEXP (XEXP (operands[0], 0), 0))
&& GET_CODE (XEXP (XEXP (operands[0], 0), 1)) == CONST_INT
&& VAL_5_BITS_P (XEXP (XEXP (operands[0], 0), 1))))"
{
/* The SL completor indicates good spatial locality but poor temporal
locality. The ldw instruction with a target of general register 0
@ -9439,11 +9462,11 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
static const char * const instr[2][2][2] = {
{
{
"ldw,sl RT'%A0,%%r0",
"",
"ldw RT'%A0,%%r0",
},
{
"ldd,sl RT'%A0,%%r0",
"",
"ldd RT'%A0,%%r0",
},
},
@ -9466,6 +9489,9 @@ add,l %2,%3,%3\;bv,n %%r0(%3)"
|| (locality < 0 || locality > 3))
abort ();
if (which_alternative == 0 && locality == 0)
abort ();
return instr [which_alternative][read_or_write][locality == 0 ? 0 : 1];
}
[(set_attr "type" "load")